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THOMAS B. DE FOREST, OF BIRMINGHAM, CONNECTICUT.

Leiters Patent No. 75,131., dated lfm-eh 3, 1868.

IMPROVEMENT IN MACHINE POR REDUGING AND POINTING WIRE.

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TO ALL WIIOM IT MAY CONCER-N:

Be it known that I, THOMAS B. Dn Fenner, of Birmingham, in the county ot' New Haven, and State of Connecticut, have invented a new Improvement in Machines for Reducing or Pointing Wire; and I do hereby declare the following, when taken in connection with the accompanying drawings, and the letters of reference marked thereon, to be a. full, clear, and exact description of the same, and which saiddrawings constitute part of this specification, and represent, inv Figure 1, a top view,

Figure 2 a side view, and in Figure 3 a longitudinal central section.

This invention relates to an improvement in that class of machines used for reducing or pointing wire, and consists in the arrangement of vibrating jaws, the said vibratingjawsvrevolving, thus having the double motion, that is to say, rotary and vibratory.

To enable others skilled in the art to construct and use my improvement, I will proceed to describe the same as illustrated in the accompanying drawings. K

A is theframe upon which the mechanism is pla-ced; B, the driving-shaft, supported in bearings, C, and driven by the application of power thereto in any convenient manner. D is a hollow shaft supported in bearings E, and seas to revolve freely therein, and lying at right angles and nearly in the plane with the drivingshaft B. In the outer end or head, F, ofthe said driving-shaft arc arranged two or more jaws, G and G', pivoted at a, and each two or corresponding jaws being opposite each other, (I prefer'but two practically.) Thesejaws carry in their outer end a die, g, and vibrate upon their pivots, as from the position in guS to the position in red, or clos-ed, in same figure; and thejaws are thus caused to vibrate by the arrangement of a rod, I-I,-passing through the hollow' shaft D; and upon its outer end is fixed a head, I, and over which head thejaws are notched, as ing. S, or otherwise connected, so that the jaws will revolve around the said head I. On the driving-shaft B is arranged a cam, J, which I make of many sides, so as Yto get several operations to each revolution, and the said cam operates within a stirrup, K, and within the said stirrup are arranged rolls, L, at the front and rear of the c am; and extending back, the stirrup is supported in a bearing, M, upon the frame.

When the cam J revolves, one ofthe projections striking the front roll will force the rod II forward. Then a projection upon the opposite side of the cam striking the rear roll, forces the rod II back, thus'moving hack and forth, as denoted in red, iig. 3; and this reciprocating movement of the head I, by the action of the cam J working in the notches or connections in thejaws, causes the vibration -of thejaws; that is to say, the forward movement of thehead I opens the jaws, and the rear movement opens thejaws. Combined with this movement, a rotary movement is given to the hollow shaft D, carrying with it'thejaws, and this is conveniently done by a band, N, from a pulley, I?, on the driving-shaft, to a pulley, R, on the hollow shaft D, or in other manner. Thus I combine a rotary and rapid vibratory movement of the jaws, and I do this in a very simple manner, avoiding the multiplication ofjoints and parts, and so as to produce a durable and useful machine, the operation of which is as follows:

The dies Vd are constructed so as to give to the material to be reduced or pointed the desired form; then, power being applied, and the jaws caused to move, as before described, the wire or metal to bc reduced is inserted bet-Ween the vibrating dies, andquiclily reduced or pointed, as the case may be.

It will be readily seen that the same, or nearly the same, result may be produced by having but one vibrating jaw, the other being firmly and solidly ixc'd in the head; but, for obvious reasons, I prefer two or more vibrating corresponding jaws.

Having thus fully described my invention, what I claim as new and useful, and desire to secure by Letters Patent, is-

1. The combination of the two jaws G and G with the revolving shaft I), when constructed and arranged so as to receive from thc said shaft a rotary motion, and further combined with the cam J and shaft I-I, so that the said jaws receive therefrom a vibra-tory movement, and when both the jaws are movable, or the one ixed and the other movable, substantially as herein set forth.

2. The hollow shaft D, carrying the vibratingjaws G, having combined therewith a head, I, and cam J, with its stirrup-eonnection, so as to operate in the manner herein described. i

^ TIIOS. B. DE FOREST.

AWitnesses:

JonN E. EAnLn, C. B. RICHARDS. 

